By six in the morning the Youngmann is already moving, and every one of those cars came out of a driveway that somebody had to clear. Prime Landscapers takes that on all winter — plowing drives and lots, shoveling walks, salting the shaded stretches that ice first and thaw last. In the green half of the year the same ground gets mowed, trimmed and edged, beds mulched, cleanups run in spring and fall. Amherst is a town of driveways and front lawns, and both want the same thing: someone with the right machine and a route that comes back around. The work is finished by the time most people notice it needed doing.